Global Patent Index - EP 2021276 A2

EP 2021276 A2 2009-02-11 - PROCESS FOR PURIFYING PERFLUORINATED PRODUCTS

Title (en)

PROCESS FOR PURIFYING PERFLUORINATED PRODUCTS

Title (de)

VERFAHREN ZUM REINIGEN VON PERFLUORIERTEN PRODUKTEN

Title (fr)

PROCEDE DE PURIFICATION DE PRODUITS PERFLUORES

Publication

EP 2021276 A2 (EN)

Application

EP 07795562 A

Priority

  • US 2007012873 W
  • US 80966306 P

Abstract (en)

[origin: WO2007143055A2] This invention relates to a process for purifying at least one of perfluoromethane and nitrogen trifluoride from a mixture thereof using an ionic liquid. The process may be performed by a technique such as extractive distillation or absorption wherein at least one ionic liquid is used as the entraining agent or absorbent, respectively.

IPC 8 full level (invention and additional information)

C01B 21/086 (2006.01); C07C 17/38 (2006.01)

CPC (invention and additional information)

C07C 17/38 (2013.01); C01B 21/0837 (2013.01); C07C 17/386 (2013.01)

Combination set (CPC)

C07C 17/386 + C07C 19/08

Citation (search report)

See references of WO 2007143055A2

Designated contracting state (EPC)

DE FR GB

DOCDB simple family

WO 2007143055 A2 20071213; WO 2007143055 A3 20090514; CN 101541673 A 20090923; CN 101541673 B 20130821; EP 2021276 A2 20090211; EP 2021276 B1 20130717; JP 2009541212 A 20091126; JP 5266211 B2 20130821; KR 20090024742 A 20090309; TW 200808649 A 20080216; US 2007297965 A1 20071227; US 8771626 B2 20140708